* fhandler.h (-struct wsa_event): Move to wsa_event.h. Include

wsa_event.h instead.
	* fhandler_socket.cc (NUM_SOCKS): Move to wsa_event.h.
	(wsa_events): Move from DLL shared area to cygwin_shared shared
	memory.  Accommodate throughout.
	(socket_serial_number): Ditto.
	* fhandler_tape.cc (mt): Ditto.
	(mtinfo_init): Remove.
	(mt): Define as cygwin_shared->mt.
	* flock.cc (FLOCK_PARENT_DIR_ACCESS): Remove.
	(FLOCK_INODE_DIR_ACCESS): Move up in file.
	(FLOCK_MUTANT_ACCESS): Ditto.
	(FLOCK_EVENT_ACCESS): Ditto.
	(get_lock_parent_dir): Remove.
	(inode_t::inode_t): Call get_shared_parent_dir to get parent dir handle.
	Add a "flock-" prefix to file's lock directory name for clarity.
	* mtinfo.h (mtinfo_init): Drop declaration.
	* net.cc (last_used_bindresvport): Move from DLL shared area to
	cygwin_shared shared memory.
	(cygwin_bindresvport_sa): Accommodate above change.
	* sec_helper.cc (_everyone_sd): Move here from flock.cc.
	* security.h (SD_MIN_SIZE): Ditto.
	(everyone_sd): Ditto.
	* shared.cc (cygwin_shared_area): Remove.
	(cygwin_shared_h): New handle.
	(get_shared_parent_dir): New static function.
	(shared_name): Drop session_local argument.  Call get_shared_parent_dir
	here.  Add cygwin-shared subdir to object name.
	(offsets): Reinstantiate SH_CYGWIN_SHARED member.
	(open_shared): Revert change from 2007-03-29 for systems supporting
	SeCreateGlobalPrivilege.
	(shared_info::initialize): Call mtinfo's initialize here.
	(memory_init): Drop call to mtinfo_init.
	* shared_info.h (SHARED_INFO_CB): Accommodate change to shared_info.
	(CURR_SHARED_MAGIC): Ditto.
	(class shared_info): Add members for global socket and tape info
	sharing.
	(enum shared_locations): Reinstantiate SH_CYGWIN_SHARED.
	(get_shared_parent_dir): Declare.
	(shared_name): Drop session_local argument from declaration.
	* wsa_event.h: New file.  Move definitions of NUM_SOCKS and
	struct wsa_event here.

winsup/cygwin/ChangeLog

@@ -1,3 +1,48 @@
+2008-04-18  Corinna Vinschen  <corinna@vinschen.de>
+
+	* fhandler.h (-struct wsa_event): Move to wsa_event.h.  Include
+	wsa_event.h instead.
+	* fhandler_socket.cc (NUM_SOCKS): Move to wsa_event.h.
+	(wsa_events): Move from DLL shared area to cygwin_shared shared
+	memory.  Accommodate throughout.
+	(socket_serial_number): Ditto.
+	* fhandler_tape.cc (mt): Ditto.
+	(mtinfo_init): Remove.
+	(mt): Define as cygwin_shared->mt.
+	* flock.cc (FLOCK_PARENT_DIR_ACCESS): Remove.
+	(FLOCK_INODE_DIR_ACCESS): Move up in file.
+	(FLOCK_MUTANT_ACCESS): Ditto.
+	(FLOCK_EVENT_ACCESS): Ditto.
+	(get_lock_parent_dir): Remove.
+	(inode_t::inode_t): Call get_shared_parent_dir to get parent dir handle.
+	Add a "flock-" prefix to file's lock directory name for clarity.
+	* mtinfo.h (mtinfo_init): Drop declaration.
+	* net.cc (last_used_bindresvport): Move from DLL shared area to
+	cygwin_shared shared memory.
+	(cygwin_bindresvport_sa): Accommodate above change.
+	* sec_helper.cc (_everyone_sd): Move here from flock.cc.
+	* security.h (SD_MIN_SIZE): Ditto.
+	(everyone_sd): Ditto.
+	* shared.cc (cygwin_shared_area): Remove.
+	(cygwin_shared_h): New handle.
+	(get_shared_parent_dir): New static function.
+	(shared_name): Drop session_local argument.  Call get_shared_parent_dir
+	here.  Add cygwin-shared subdir to object name.
+	(offsets): Reinstantiate SH_CYGWIN_SHARED member.
+	(open_shared): Revert change from 2007-03-29 for systems supporting
+	SeCreateGlobalPrivilege.
+	(shared_info::initialize): Call mtinfo's initialize here.
+	(memory_init): Drop call to mtinfo_init.
+	* shared_info.h (SHARED_INFO_CB): Accommodate change to shared_info.
+	(CURR_SHARED_MAGIC): Ditto.
+	(class shared_info): Add members for global socket and tape info
+	sharing.
+	(enum shared_locations): Reinstantiate SH_CYGWIN_SHARED.
+	(get_shared_parent_dir): Declare.
+	(shared_name): Drop session_local argument from declaration.
+	* wsa_event.h: New file.  Move definitions of NUM_SOCKS and
+	struct wsa_event here.
+
 2008-04-18  Christopher Faylor  <me+cygwin@cgf.cx>
 
 	* autoload.cc (noload): Make sure this and succeeding functions are

winsup/cygwin/fhandler.h

@@ -394,13 +394,7 @@ class fhandler_mailslot : public fhandler_base
   select_record *select_read (select_record *s);
 };
 
-struct wsa_event
+#include "wsa_event.h"
-{
-  LONG serial_number;
-  long events;
-  int  connect_errorcode;
-  pid_t owner;
-};
 
 class fhandler_socket: public fhandler_base
 {

winsup/cygwin/fhandler_socket.cc

@@ -403,15 +403,9 @@ fhandler_socket::af_local_set_secret (char *buf)
 /* Maximum number of concurrently opened sockets from all Cygwin processes
    per session.  Note that shared sockets (through dup/fork/exec) are
    counted as one socket. */
-#define NUM_SOCKS	(65536 / sizeof (wsa_event))
-
 #define LOCK_EVENTS	WaitForSingleObject (wsock_mtx, INFINITE)
 #define UNLOCK_EVENTS	ReleaseMutex (wsock_mtx)
 
-static wsa_event wsa_events[NUM_SOCKS] __attribute__((section (".cygwin_dll_common"), shared)) = { 0 };
-
-static LONG socket_serial_number __attribute__((section (".cygwin_dll_common"), shared)) = 0;
-
 static HANDLE wsa_slot_mtx;
 
 static wsa_event *
@@ -422,7 +416,7 @@ search_wsa_event_slot (LONG new_serial_number)
   if (!wsa_slot_mtx)
     {
       wsa_slot_mtx = CreateMutex (&sec_all, FALSE,
-				  shared_name (name, "sock", 0, true));
+				  shared_name (name, "sock", 0));
       if (!wsa_slot_mtx)
 	api_fatal ("Couldn't create/open shared socket mutex, %E");
     }
@@ -436,11 +430,11 @@ search_wsa_event_slot (LONG new_serial_number)
       break;
     }
   unsigned int slot = new_serial_number % NUM_SOCKS;
-  while (wsa_events[slot].serial_number)
+  while (cygwin_shared->wsa_events[slot].serial_number)
     {
       HANDLE searchmtx = OpenMutex (STANDARD_RIGHTS_READ, FALSE,
-	    shared_name (searchname, "sock", wsa_events[slot].serial_number,
+	    shared_name (searchname, "sock",
-			 true));
+			 cygwin_shared->wsa_events[slot].serial_number));
       if (!searchmtx)
 	break;
       /* Mutex still exists, attached socket is active, try next slot. */
@@ -454,10 +448,10 @@ search_wsa_event_slot (LONG new_serial_number)
 	  return NULL;
 	}
     }
-  memset (&wsa_events[slot], 0, sizeof (wsa_event));
+  memset (&cygwin_shared->wsa_events[slot], 0, sizeof (wsa_event));
-  wsa_events[slot].serial_number = new_serial_number;
+  cygwin_shared->wsa_events[slot].serial_number = new_serial_number;
   ReleaseMutex (wsa_slot_mtx);
-  return wsa_events + slot;
+  return cygwin_shared->wsa_events + slot;
 }
 
 bool
@@ -469,12 +463,12 @@ fhandler_socket::init_events ()
 
   do
     {
-      new_serial_number = InterlockedIncrement (&socket_serial_number);
+      new_serial_number =
+	InterlockedIncrement (&cygwin_shared->socket_serial_number);
       if (!new_serial_number)	/* 0 is reserved for global mutex */
-	InterlockedIncrement (&socket_serial_number);
+	InterlockedIncrement (&cygwin_shared->socket_serial_number);
       wsock_mtx = CreateMutex (&sec_all, FALSE,
-			       shared_name (name, "sock", new_serial_number,
+			       shared_name (name, "sock", new_serial_number));
-					    true));
       if (!wsock_mtx)
 	{
 	  debug_printf ("CreateMutex, %E");

winsup/cygwin/fhandler_tape.cc

@@ -22,7 +22,6 @@ details. */
 #include "cygheap.h"
 #include "shared_info.h"
 #include "sigproc.h"
-#include "mtinfo.h"
 
 /* Media changes and bus resets are sometimes reported and the function
    hasn't been executed.  We repeat all functions which return with one
@@ -1155,17 +1154,11 @@ mtinfo::initialize ()
     }
 }
 
-static mtinfo mt __attribute__((section (".cygwin_dll_common"), shared));
-
-void __stdcall
-mtinfo_init ()
-{
-  mt.initialize ();
-}
-
 /**********************************************************************/
 /* fhandler_dev_tape */
 
+#define mt	(cygwin_shared->mt)
+
 #define lock(err_ret_val) if (!_lock ()) return err_ret_val;
 
 inline bool

winsup/cygwin/flock.cc

@@ -106,6 +106,7 @@
 #include <stdlib.h>
 #include "cygerrno.h"
 #include "security.h"
+#include "shared_info.h"
 #include "path.h"
 #include "fhandler.h"
 #include "dtable.h"
@@ -133,6 +134,19 @@ static NO_COPY muto lockf_guard;
 
 #define LOCK_OBJ_NAME_LEN	64
 
+#define FLOCK_INODE_DIR_ACCESS	(DIRECTORY_QUERY \
+				 | DIRECTORY_TRAVERSE \
+				 | DIRECTORY_CREATE_OBJECT \
+				 | READ_CONTROL)
+
+#define FLOCK_MUTANT_ACCESS	(MUTANT_QUERY_STATE \
+				 | SYNCHRONIZE \
+				 | READ_CONTROL)
+
+#define FLOCK_EVENT_ACCESS	(EVENT_QUERY_STATE \
+				 | SYNCHRONIZE \
+				 | READ_CONTROL)
+
 /* This function takes the own process security descriptor DACL and adds
    SYNCHRONIZE permissions for everyone.  This allows all processes
    to wait for this process to die when blocking in a F_SETLKW on a lock
@@ -190,84 +204,6 @@ allow_others_to_sync ()
   done = true;
 }
 
-/* Helper function to create an event security descriptor which only allows
-   specific access to everyone.  Only the creating process has all access
-   rights. */
-
-#define FLOCK_PARENT_DIR_ACCESS	(DIRECTORY_QUERY \
-				 | DIRECTORY_TRAVERSE \
-				 | DIRECTORY_CREATE_SUBDIRECTORY \
-				 | READ_CONTROL)
-
-#define FLOCK_INODE_DIR_ACCESS	(DIRECTORY_QUERY \
-				 | DIRECTORY_TRAVERSE \
-				 | DIRECTORY_CREATE_OBJECT \
-				 | READ_CONTROL)
-
-#define FLOCK_MUTANT_ACCESS	(MUTANT_QUERY_STATE \
-				 | SYNCHRONIZE \
-				 | READ_CONTROL)
-
-#define FLOCK_EVENT_ACCESS	(EVENT_QUERY_STATE \
-				 | SYNCHRONIZE \
-				 | READ_CONTROL)
-
-#define SD_MIN_SIZE (sizeof (SECURITY_DESCRIPTOR) + MAX_DACL_LEN (1))
-
-#define everyone_sd(access)	(_everyone_sd (alloca (SD_MIN_SIZE), (access)))
-
-PSECURITY_DESCRIPTOR
-_everyone_sd (void *buf, ACCESS_MASK access)
-{
-  PSECURITY_DESCRIPTOR psd = (PSECURITY_DESCRIPTOR) buf;
-
-  if (psd)
-    {
-      InitializeSecurityDescriptor (psd, SECURITY_DESCRIPTOR_REVISION);
-      PACL dacl = (PACL) (psd + 1);
-      InitializeAcl (dacl, MAX_DACL_LEN (1), ACL_REVISION);
-      if (!AddAccessAllowedAce (dacl, ACL_REVISION, access, 
-				well_known_world_sid))
-	{
-	  debug_printf ("AddAccessAllowedAce: %lu", GetLastError ());
-	  return NULL;
-	}
-      LPVOID ace;
-      if (!FindFirstFreeAce (dacl, &ace))
-	{
-	  debug_printf ("FindFirstFreeAce: %lu", GetLastError ());
-	  return NULL;
-	}
-      dacl->AclSize = (char *) ace - (char *) dacl;
-      SetSecurityDescriptorDacl (psd, TRUE, dacl, FALSE);
-    }
-  return psd;
-}
-
-/* This function returns a handle to the top-level directory in the global
-   NT namespace used to implement advisory locking. */
-static HANDLE
-get_lock_parent_dir ()
-{
-  static HANDLE dir;
-  UNICODE_STRING uname;
-  OBJECT_ATTRIBUTES attr;
-  NTSTATUS status;
-
-  INODE_LIST_LOCK();
-  if (!dir)
-    {
-      RtlInitUnicodeString (&uname, L"\\BaseNamedObjects\\cygwin-fcntl-lk");
-      InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
-				  NULL, everyone_sd (FLOCK_PARENT_DIR_ACCESS));
-      status = NtCreateDirectoryObject (&dir, FLOCK_PARENT_DIR_ACCESS, &attr);
-      if (!NT_SUCCESS (status))
-	api_fatal ("NtCreateDirectoryObject(parent): %p", status);
-    }
-  INODE_LIST_UNLOCK ();
-  return dir;
-}
-
 /* Get the handle count of an object. */
 static ULONG
 get_obj_handle_count (HANDLE h)
@@ -507,15 +443,15 @@ inode_t::inode_t (__dev32_t dev, __ino64_t ino)
 : i_lockf (NULL), i_all_lf (NULL), i_dev (dev), i_ino (ino)
 {
   HANDLE parent_dir;
-  WCHAR name[32];
+  WCHAR name[48];
   UNICODE_STRING uname;
   OBJECT_ATTRIBUTES attr;
   NTSTATUS status;
 
-  parent_dir = get_lock_parent_dir ();
+  parent_dir = get_shared_parent_dir ();
   /* Create a subdir which is named after the device and inode_t numbers
      of the given file, in hex notation. */
-  int len = __small_swprintf (name, L"%08x-%016X", dev, ino);
+  int len = __small_swprintf (name, L"flock-%08x-%016X", dev, ino);
   RtlInitCountedUnicodeString (&uname, name, len * sizeof (WCHAR));
   InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
 			      parent_dir, everyone_sd (FLOCK_INODE_DIR_ACCESS));

winsup/cygwin/mtinfo.h

@@ -140,5 +140,3 @@ public:
   void initialize ();
   mtinfo_drive *drive (int num) { return &_drive[num]; }
 };
-
-extern void __stdcall mtinfo_init ();

winsup/cygwin/net.cc

@@ -30,6 +30,7 @@ details. */
 #include "cygerrno.h"
 #include "security.h"
 #include "cygwin/version.h"
+#include "shared_info.h"
 #include "perprocess.h"
 #include "path.h"
 #include "fhandler.h"
@@ -2140,8 +2141,6 @@ if_freenameindex (struct if_nameindex *ptr)
 #define PORT_HIGH	(IPPORT_RESERVED - 1)
 #define NUM_PORTS	(PORT_HIGH - PORT_LOW + 1)
 
-LONG last_used_bindresvport __attribute__((section (".cygwin_dll_common"), shared)) = IPPORT_RESERVED;
-
 extern "C" int
 cygwin_bindresvport_sa (int fd, struct sockaddr *sa)
 {
@@ -2199,11 +2198,11 @@ cygwin_bindresvport_sa (int fd, struct sockaddr *sa)
 
   for (int i = 0; i < NUM_PORTS; i++)
     {
-      while ((myport = InterlockedExchange (&last_used_bindresvport, 0)) == 0)
+      while ((myport = InterlockedExchange (&cygwin_shared->last_used_bindresvport, 0)) == 0)
 	low_priority_sleep (0);
       if (--myport < PORT_LOW)
 	myport = PORT_HIGH;
-      InterlockedExchange (&last_used_bindresvport, myport);
+      InterlockedExchange (&cygwin_shared->last_used_bindresvport, myport);
 
       if (sa->sa_family == AF_INET6)
 	sin6->sin6_port = htons (myport);

winsup/cygwin/sec_helper.cc

@@ -518,3 +518,36 @@ __sec_user (PVOID sa_buf, PSID sid1, PSID sid2, DWORD access2, BOOL inherit)
   psa->bInheritHandle = inherit;
   return psa;
 }
+
+/* Helper function to create an event security descriptor which only allows
+   specific access to everyone.  Only the creating process has all access
+   rights. */
+
+PSECURITY_DESCRIPTOR
+_everyone_sd (void *buf, ACCESS_MASK access)
+{
+  PSECURITY_DESCRIPTOR psd = (PSECURITY_DESCRIPTOR) buf;
+
+  if (psd)
+    {
+      InitializeSecurityDescriptor (psd, SECURITY_DESCRIPTOR_REVISION);
+      PACL dacl = (PACL) (psd + 1);
+      InitializeAcl (dacl, MAX_DACL_LEN (1), ACL_REVISION);
+      if (!AddAccessAllowedAce (dacl, ACL_REVISION, access, 
+				well_known_world_sid))
+	{
+	  debug_printf ("AddAccessAllowedAce: %lu", GetLastError ());
+	  return NULL;
+	}
+      LPVOID ace;
+      if (!FindFirstFreeAce (dacl, &ace))
+	{
+	  debug_printf ("FindFirstFreeAce: %lu", GetLastError ());
+	  return NULL;
+	}
+      dacl->AclSize = (char *) ace - (char *) dacl;
+      SetSecurityDescriptorDacl (psd, TRUE, dacl, FALSE);
+    }
+  return psd;
+}
+

winsup/cygwin/security.h

@@ -20,6 +20,7 @@ details. */
 #define MAX_SID_LEN 40
 #define MAX_DACL_LEN(n) (sizeof (ACL) \
 		   + (n) * (sizeof (ACCESS_ALLOWED_ACE) - sizeof (DWORD) + MAX_SID_LEN))
+#define SD_MIN_SIZE (sizeof (SECURITY_DESCRIPTOR) + MAX_DACL_LEN (1))
 #define ACL_DEFAULT_SIZE 3072
 #define NO_SID ((PSID)NULL)
 
@@ -421,6 +422,9 @@ extern SECURITY_ATTRIBUTES sec_none, sec_none_nih, sec_all, sec_all_nih;
 extern SECURITY_ATTRIBUTES *__stdcall __sec_user (PVOID sa_buf, PSID sid1, PSID sid2,
 						  DWORD access2, BOOL inherit)
   __attribute__ ((regparm (3)));
+extern PSECURITY_DESCRIPTOR _everyone_sd (void *buf, ACCESS_MASK access);
+#define everyone_sd(access)	(_everyone_sd (alloca (SD_MIN_SIZE), (access)))
+
 extern bool sec_acl (PACL acl, bool original, bool admins, PSID sid1 = NO_SID,
 		     PSID sid2 = NO_SID, DWORD access2 = 0);
 

winsup/cygwin/shared.cc

@@ -22,20 +22,52 @@ details. */
 #include "shared_info_magic.h"
 #include "registry.h"
 #include "cygwin_version.h"
-#include "mtinfo.h"
+#include "ntdll.h"
+#include <alloca.h>
 
-static shared_info cygwin_shared_area __attribute__((section (".cygwin_dll_common"), shared));
 shared_info NO_COPY *cygwin_shared;
 user_info NO_COPY *user_shared;
+HANDLE NO_COPY cygwin_shared_h;
 HANDLE NO_COPY cygwin_user_h;
 
+/* This function returns a handle to the top-level directory in the global
+   NT namespace used to implement global objects including shared memory. */
+
+#define CYG_SHARED_DIR_ACCESS	(DIRECTORY_QUERY \
+                                 | DIRECTORY_TRAVERSE \
+                                 | DIRECTORY_CREATE_SUBDIRECTORY \
+                                 | DIRECTORY_CREATE_OBJECT \
+                                 | READ_CONTROL)
+
+
+HANDLE
+get_shared_parent_dir ()
+{
+  static HANDLE dir;
+  UNICODE_STRING uname;
+  OBJECT_ATTRIBUTES attr;
+  NTSTATUS status;
+  
+  if (!dir)
+    {
+      RtlInitUnicodeString (&uname, L"\\BaseNamedObjects\\cygwin-shared");
+      InitializeObjectAttributes (&attr, &uname, OBJ_INHERIT | OBJ_OPENIF,
+                                  NULL, everyone_sd (CYG_SHARED_DIR_ACCESS));
+      status = NtCreateDirectoryObject (&dir, CYG_SHARED_DIR_ACCESS, &attr);
+      if (!NT_SUCCESS (status))
+        api_fatal ("NtCreateDirectoryObject(parent): %p", status);
+    }
+  return dir;
+} 
+
 char * __stdcall
-shared_name (char *ret_buf, const char *str, int num, bool session_local)
+shared_name (char *ret_buf, const char *str, int num)
 {
   extern bool _cygwin_testing;
 
-  __small_sprintf (ret_buf, "%s%s.%s.%d",
+  get_shared_parent_dir ();
-		   session_local ? "" : cygheap->shared_prefix,
+  __small_sprintf (ret_buf, "%scygwin-shared\\%s.%s.%d",
+		   cygheap->shared_prefix,
 		   cygwin_version.shared_id, str, num);
   if (_cygwin_testing)
     strcat (ret_buf, cygwin_version.dll_build_date);
@@ -47,6 +79,10 @@ shared_name (char *ret_buf, const char *str, int num, bool session_local)
 
 static ptrdiff_t offsets[] =
 {
+  - pround (sizeof (shared_info))
+  - pround (sizeof (user_info))
+  - pround (sizeof (console_state))
+  - pround (sizeof (_pinfo)),
   - pround (sizeof (user_info))
   - pround (sizeof (console_state))
   - pround (sizeof (_pinfo)),
@@ -80,44 +116,17 @@ open_shared (const char *name, int n, HANDLE& shared_h, DWORD size,
     m = SH_JUSTOPEN;
   else
     {
-      /* Beginning with Windows 2003 Server, a process doesn't necessarily
-	 have the right to create globally accessible shared memory.  If so,
-	 creating the shared memory will fail with ERROR_ACCESS_DENIED if the
-	 user doesn't have the SeCreateGlobalPrivilege privilege.  If that
-	 happened, we retry to create a shared memory object locally.  This
-	 only allows to see the processes in the current user session, but
-	 that's better than nothing. */
-
       if (name)
 	mapname = shared_name (map_buf, name, n);
       if (m == SH_JUSTOPEN)
-	{
 	shared_h = OpenFileMapping (access, FALSE, mapname);
-	  if (!shared_h && wincap.has_create_global_privilege ()
-	      && GetLastError () == ERROR_FILE_NOT_FOUND)
-	    shared_h = OpenFileMapping (access, FALSE, mapname + 7);
-	}
       else
 	{
 	  shared_h = CreateFileMapping (INVALID_HANDLE_VALUE, psa,
 	  				PAGE_READWRITE, 0, size, mapname);
-	  switch (GetLastError ())
-	    {
-	    case ERROR_ALREADY_EXISTS:
-	      m = SH_JUSTOPEN;
-	      break;
-	    case ERROR_ACCESS_DENIED:
-	      if (wincap.has_create_global_privilege ())
-	        {
-		  shared_h = CreateFileMapping (INVALID_HANDLE_VALUE, psa,
-						PAGE_READWRITE, 0, size,
-						mapname + 7);
 	  if (GetLastError () == ERROR_ALREADY_EXISTS)
 	    m = SH_JUSTOPEN;
 	}
-	      break;
-	    }
-	}
       if (shared_h)
 	/* ok! */;
       else if (m != SH_JUSTOPEN)
@@ -230,6 +239,8 @@ shared_info::initialize ()
       cb = sizeof (*this);	/* Do last, after all shared memory initialization */
     }
 
+  mt.initialize ();
+
   if (cb != SHARED_INFO_CB)
     system_printf ("size of shared memory region changed from %u to %u",
 		   SHARED_INFO_CB, cb);
@@ -247,11 +258,17 @@ memory_init ()
       cygheap->user.init ();
     }
 
-  cygwin_shared = &cygwin_shared_area;
+  /* Initialize general shared memory */
+  shared_locations sh_cygwin_shared = SH_CYGWIN_SHARED;
+  cygwin_shared = (shared_info *) open_shared ("shared",
+					       CYGWIN_VERSION_SHARED_DATA,
+					       cygwin_shared_h,
+					       sizeof (*cygwin_shared),
+					       sh_cygwin_shared);
+
   cygwin_shared->initialize ();
 
   user_shared_initialize (false);
-  mtinfo_init ();
 }
 
 unsigned

winsup/cygwin/shared_info.h

@@ -10,6 +10,8 @@ details. */
 
 #include "tty.h"
 #include "security.h"
+#include "wsa_event.h"
+#include "mtinfo.h"
 
 /* Mount table entry */
 
@@ -121,9 +123,9 @@ public:
 				  cygwin_version.api_minor)
 #define SHARED_VERSION_MAGIC CYGWIN_VERSION_MAGIC (SHARED_MAGIC, SHARED_VERSION)
 
-#define SHARED_INFO_CB 19992
+#define SHARED_INFO_CB 63912
 
-#define CURR_SHARED_MAGIC 0xb7048a88U
+#define CURR_SHARED_MAGIC 0x419c874U
 
 /* NOTE: Do not make gratuitous changes to the names or organization of the
    below class.  The layout is checksummed to determine compatibility between
@@ -137,8 +139,12 @@ class shared_info
   bool heap_slop_inited;
   unsigned heap_slop;
   DWORD sys_mount_table_counter;
-
   tty_list tty;
+  wsa_event wsa_events[NUM_SOCKS];
+  LONG socket_serial_number;
+  LONG last_used_bindresvport;
+  mtinfo mt;
+
   void initialize ();
   unsigned heap_chunk_size ();
   unsigned heap_slop_size ();
@@ -151,6 +157,7 @@ extern HANDLE cygwin_user_h;
 
 enum shared_locations
 {
+  SH_CYGWIN_SHARED,
   SH_USER_SHARED,
   SH_SHARED_CONSOLE,
   SH_MYSELF,
@@ -174,7 +181,8 @@ struct console_state
 };
 #endif
 
-char *__stdcall shared_name (char *, const char *, int, bool = false);
+HANDLE get_shared_parent_dir ();
+char *__stdcall shared_name (char *, const char *, int);
 void *__stdcall open_shared (const char *name, int n, HANDLE &shared_h, DWORD size,
 			     shared_locations&, PSECURITY_ATTRIBUTES psa = &sec_all,
 			     DWORD access = FILE_MAP_READ | FILE_MAP_WRITE);

winsup/cygwin/wsa_event.h

@@ -0,0 +1,25 @@
+/* wsa_event.h: type definition of a wsock event storage structure.
+
+   Copyright 2008 Red Hat, Inc.
+
+This file is part of Cygwin.
+
+This software is a copyrighted work licensed under the terms of the
+Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
+details. */
+
+#ifndef _WSA_EVENT_H_
+#define _WSA_EVENT_H_
+
+/* All Cygwin processes together can share 2048 sockets. */
+#define NUM_SOCKS       (32768 / sizeof (wsa_event))
+  
+struct wsa_event 
+{
+  LONG serial_number;
+  long events;
+  int  connect_errorcode;
+  pid_t owner;
+};  
+
+#endif /* _WSA_EVENT_H_ */